Wikipedia suggests that the Australian Open Chess Championships began in 1971 yet there are many tournaments that billed themselves as the "Australian Open" before that year.
For example:
The Age (Melbourne, Vic. : 1854 - 1954)
Mon 7 Jan 1952 https://trove.nla.gov.au/newspaper/a...n%20Tournament
Is there any basis for the Open beginning in 1971?